نتایج جستجو برای: margalef

تعداد نتایج: 226  

Journal: :Nitrogen 2022

The literature suggests that nitrogen (N) fertilization increases yield in soybean. This study aimed to investigate the effects of N on: (i) performance soybean, and (ii) weed flora. A two-year field experiment was carried out Agrinio, Western Greece. set up a randomized complete block design, with four organic fertilizer treatments six replications. included 0 kg ha−1 (N0/unfertilized control)...

Journal: :journal of rangeland science 2013
habib yazdanshenas mohammad jafari hossein azarnivand hossein arzani malihe nasiri

understanding the plant species diversity could be used as an importantindicator applied for the natural areas management. the aim of this study was toinvestigate the relationships between soil characterizes with distribution and diversity ofplant in vegetation types in karvan district (located in west of isfahan province). for thispurpose, three vegetation types were selected as follows: scari...

Journal: :Intropica 2021

La estructura taxonómica de la comunidad fitoplanctónica se encuentra influenciada por múltiples factores, en su mayoría integrados aspectos funcionales y del metabolismo ecosistema. Con el objetivo evaluar variación fitoplancton lagos andinos sobre un amplio espectro condiciones, realizó estudio 12 Cordillera Oriental colombiana agrupados diferentes rangos altitudinales (alta montaña tropical,...

Journal: :Gazi Üniversitesi Orman Fakültesi dergisi 2021

Aim of study: The main purpose the study is to determine site factors affecting bird diversity. 
 Area This was performed in Çandır District, Isparta which located inner part Western Mediterranean region.
 Material and methods: In present study, Observations were conducted regularly a total 43 sample sites throughout each month 2016. Also, observed using point-counting techniques from...

Journal: : 2021

Phytoplankton in coastal waters are important for the evaluation of either biodiversity or environmental impacts because this highly vulnerable ecosystem. Seasonal and annual changes phytoplankton community structure Quang Ngai during period 2015 to 2019 were analyzed assess diversity reveal possible causes these changes. A total 366 taxa belonging 10 classes identified throughout present study...

Journal: :Acta aquatica turcica 2021

We used seven biotic indices to determine the water quality of Karabal Stream (Gediz River) in West Anatolia, Turkey. The were based on benthic macroinvertebrate and physicochemical parameters: Saprobi Index (SI), Biological Monitoring Working Party (BMWP), Average Score per Taxon (ASPT), Family Biotic (FBI), Belgian (BBI), EPT-Taxa [%] as Shannon-Weaver index (SWDI), Simpsons (SDI) Margalef (M...

Journal: :Aquatic research 2021

This study was carried out in Kelebek, which is the most important stream Gediz River Basin, Turkey, to determine water quality by using macroinvertebrate-based metrics and physicochemial variables. In addition, we also aimed investigate effects of anthropogenic pressure dam construction on macroinvertebrates during period. this study, following biotic indices are used: Saprobi Index (SI), Biol...

Journal: :Nepalese journal of zoology 2023

This study aimed to compare the diversity of birds between protected and non–protected areas that are similar in climatic geographical features. The was carried out three different habitat types (Forest, Agricultural land Wetland Sundarijal Non-protected Changunarayan. Field data were collected using a “Point Count Approach” transects which laid & Wetland). Shannon-Wiener Margalef Diversity...

Journal: :Pertanika journal of tropical agricultural science 2022

Hemipterans are the diverse, abundant, and important pests in paddy ecosystem due to their piercing sucking mouthparts that feed on crop causing significant losses rice yields. Despite roles ecosystem, information DNA barcode, diversity, species richness has been occasionally discussed. This study aimed measure its abundance, richness, barcode hemipteran from ecosystem. Active sampling was used...

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